Tissue expansion device



FIG. 1 is a front, top perspective view of a tissue expansion device;

FIG. 2 is a top plan view of the tissue expansion device of FIG. 1;

FIG. 3 is a bottom plan view of the tissue expansion device of FIG. 1;

FIG. 4 is a left side view of the tissue expansion device of FIG. 1, the right side view being in mirror image thereof;

FIG. 5 is a front plan view of the tissue expansion device of FIG. 1; and,

FIG. 6 is a rear plan view of the tissue expansion device of FIG. 1.

The broken lines shown in the figures are included for the purpose of illustration and form no part of the claimed design. 

CLAIM The ornamental design for a tissue expansion device, as shown and described. 